Antivibration device for journal box pins



Jan. 16, 1951 D. M. LIGHT 2,538,372

ANTIVIBRATION DEVICE FOR JOURNAL BOX PINS Filed June 18, 1947 2 Sheets-Sheet l INVENTOR.

Jan 16, 1951 D. M. LIGHT ANTIVIBRATION DEVICE FOR JOURNAL BOX PINS Filed June 18, 1947 Sheets-Sheet 2 Patented Jan. 16, 1951 ANTIVIBRATION DEVICE FOR JOURNAL BOX PINS David M. Light, Chicago, Ill. Application June 18, .1947, Serial N 0. 755,381

9 Claims. 1.

This invention relates to journal box mountings and moreparticularly to a novel device for preventing excessive Wear in journal box lugs to which a journal box lid is pivoted by a mum a standard arrangement for railway journal boxes;

It has been known for some time that vibration of the pin in railway service results in excessive wearing of the journal box lugs, and various attempts to prevent this condition have been made.

A primary object of the present invention is to provide novel means for reducing vibrations in a journal box lid pin without the necessity of bushing the journal box lugs.

A more specific object of the invention is to aiicrd novel spring means reacting against the pin and the journal box for reducing vibration of the pin.

Another object of the invention is to design an anti-vibration device for a journal box lid pin, wherein spring means of maximum capacity is afforded between the journal box lugs for holding the pi against vibration.

Still another object of the invention is to provide a device such as above described wherein the spring means is anchored to novel retainer means on the journal box.

The foregoing and other objects and advantages of the invention will become apparent from a consideration of the following specification and the accompanying drawings, wherein:

Figure 1 is a fragmentary vertical sectional view through a journal box showing the lid and the novel anti-vibration retainer device in rear elevation;

Figure 2 is a sectional view on the line 2-2 of Figure l, with the pivot pin for the lid about to engage the retainer spring during assembly of the pin;

Figure 3 is a sectional view comparable to Figure 2, with the pin in assembled position as shown in Figure 1;

Figure 4 is a front elevation of the novel retainer spring;

Figure 5 is a top plan view of the spring;

Figure 6 is a perspective view of the anchor plate for the spring;

Figure 7 is a fragmentary view comparable to Figure 1 but showing a modification of the invention;

Figure 8 is a sectional view on the line 88 of Figure 7;

Figure 9 is a view comparable to Figure 8 showing another modification of the invention;

Figure 10 is a sectional View on the line iii-Ifi of Figure 9; and

Figure 11 is a top plan view of the spring used" in the arrangement of Figures 9 and 10.

Describing the invention in detail and referring first to the embodiment of Figures 1 to 6; a standard A. A. R. journal box is fragmentarily shown at 2 and comprises conventional lugs 4 adapted to receive apin- 5 pivotably securing eyes or loops 8 of aconventionallid-fragmentarily shown at it." The lugs 45- are connected in the usual manner by a-web l2havinga-fiat-face is adapted to afiordabutment for a spring device (not shown) such as-is generally utilized to yieldingly hold the lidin its'closedposition shown in the drawings.

The novel retainer device comprises an anchor The pin 6 is formed with a tapered end 25 which is'entered in one oi the lugs 4 as shown in Figure 2 and engages the bearing portion 22 .of

the springs 26 to stress the-same, as the pin is urged to its assembled position shown in Figure 1 against a'fiang'e 28 of one eye 3 of the journal box lid. The other flange 25 is then bent as indicated in dotted lines in Figure 1 to maintain the pin in assembled relationship.

It may be noted that the bearing portion 22 engages the pin rearwardly of the vertical centerline as best seen in Figure 3 and the anchor plate It is eifective to prevent rearward movement of the springs 2G-as well as lateral movement thereof between the lugs 2 thus affording a compact and efficient arrangement for maintaining the springs in tight engagement with the pin to substantially prevent vibration thereef and resultant wear on the journal box lugs Figures 7 and 8 show a modification of the invention wherein the web l2 of the journal box 2 is cored out as at 28 to define an integral lug 30 adapted to anchor the inturned hooked ends of a pair of torsion coil springs 32, the remote ends of which are connected by a bearing portion 36 engageable with the associated pin (not shown) as in the previously described embodiment.

Figures 9 and 10 show another modification wherein the web l2 of the box 2 is cored away to define a T shaped opening 38 as best seen in Figure 9, afiording an anchor for the outturned 3 hooked ends 40 of a pair of torsion coiled springs 42, the remote ends of which are connected by a bearing portion 54 engageable with the associated pin (not shown), in this modification, the ends 40 are entered at the top of the T shaper. opening 33 and are moved downwardly to engage the margins of the lower portion of said opening to anchor the springs.

It may be noted that the embodiment of Figures 1 to 6 is particularly adapted for application to existing railway equipment, and the modification of Figures 7 and 8 and Figures 9 to 11 are particularly adapted for new equipment. Obviously many different means may be employed for anchoring the torsion springs, and the means shown are merely illustrative.

It will be understood that I do not wish to be limited by the exact embodiment of the device shown which is merely by way of illustration and not limitation as various and other forms of the device will be apparent to those skilled in the art Without departing from the spirit of the invention or the scope of the claims.

I claim:

1. A retainer assembly for a pin pivotally connecting a lid to an associated journal box for pivotal movement on the longitudinal axis of the pin, said assembly comprising a bearing surface on the pin engageable with the box, and a spring unit entirely disposed at one side only of said axis and stressed between the box and pin for urging said surface thereof tightly against the box.

2. A retainer assembly for a pin pivotably connecting a lid to spaced lugs of a journal box, comprising an upwardly facing bearing surface on said pin intermediate its ends and engaged with downwardly facing surface of said lugs, a torsion spring between said lugs, an anchor on the top of said box securing one end of said spring, and a bearing portion on the opposite end of said spring engaging a downwardly facing surface of said pin to prevent excessive vibration thereof.

3. A retainer assembly for a pin pivotably connecting spaced lugs of a journal box to spaced loops of a lid disposed at the remote sides of said lugs, comprising bearing surfaces in said lugs directly contacting upwardly facing areas of said pin, a spring unit including a pair of torsion coil springs between said lugs, means on said box anchoring the adjacent ends of said springs, and bearing means on the remote ends of said springs engageable with the bottom of said pin.

4. An anti-vibration assembly for a pin connecting spaced loops of a journal box lid to lugs of a journal box having a portion extending rearwardly from said lugs and having a forwardly facing opening below said lugs, adapted to be closed by said lid, comprising a torsion coil spring, a hook portion at one end of said spring, anchor means on said box engaging said hook portion to anchor said spring against movement between lugs and against movement rearwardly therefrom, and a portion at the opposite end of said spring bearing against said pin rearwardly of the vertical centerline thereof.

5. An anti-vibration assembly for a pivot pin extending through and pivotably connecting spaced loops of a lid to spaced lugs of a journal box having a forwardly facin opening below said lugs, closed by said lid, and having a top wall extending rearwardly from said lugs, comprising a pair of torsion coil springs between said lugs, corresponding ends of said springs being formed with hooks, anchor means on said box engageable with said hooks for preventing movement of said springs rearwardly from said lugs, and bearing means at the opposite corresponding ends of said springs abutting said pin rearwardly of the vertical centerline thereof for urging said hooks into engagement with said anchor means.

6. An anti-vibration assembly for a pivot pin extending through openings in a journal box and through a journal box lid to connect the latter to the box for closing a forwardly facing opening thereof, comprising spring means bearing against the pin rearwardly of its vertical centerline, and abutment means on said box facing forwardly thereof and engaging said spring means for maintaining the latter in tight engagement with said pin.

7. A retainer assembly for a substantially horizontal pin connectin' spaced loops of one of a journal box and lid members to an intermediate portion of the other member, said assembly comprising spring means reacting against a downwardly facing surface of the pin and against the box for thrusting the pin upwardly into tight engagement with the box, and anchor means on top of the box for said spring means.

8. An assembly according to claim '7, wherein the pin is provided with a head at one end and is provided with a tapered surface at its other end engageable with the spring means for stressing the latter as the pin is inserted through said loops.

9. A retainer assembly for a pin pivotally connecting spaced loops of a lid to a journal box having an opening closed by said lid, said assembly comprising torsion spring means reacting against said box and against a downwardly facing surface of said pin for thrusting the latter upwardly into tight engagement with the box, and anchor means on the top of said box for said spring means.

DAVID M. LIGHT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 739,516 Symington Sept. 22, 1903 865,070 Wissler Sept. 3, 1907 

